Phoned to ask about debit order, still got email.

So i recently got a TV from Teljoy. Got awesome help and got the tv within 2 days. No last week i noticed that the debit order never went through. At first a thought okay maybe i'm only paying end July because i paid an installment upfront . But i thought ok let me phone and ask what is happening. I spoke to several people and all of them saying that sorry no there's just a delay the can see a debit order scheduled for that day. So okay awesome i left it be. Now today i received an email telling me i haven't paid!! What the point of the debit order then and i phoned in and asked whats happening.